20045598 has 8 divisors (see below), whose sum is σ = 40091208. Its totient is φ = 6681864.

The previous prime is 20045593. The next prime is 20045617. The reversal of 20045598 is 89554002.

It is a sphenic number, since it is the product of 3 distinct primes.

20045598 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20045591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1670461 + ... + 1670472.

It is an arithmetic number, because the mean of its divisors is an integer number (5011401).

Almost surely, 2^20045598 is an apocalyptic number.

20045598 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20045598 is a wasteful number, since it uses less digits than its factorization.

20045598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340938.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 20045598 is about 4477.2310639501. The cubic root of 20045598 is about 271.6478917776.

The spelling of 20045598 in words is "twenty million, forty-five thousand, five hundred ninety-eight".